↔️ Text Diff Checker
Compare two texts and see differences highlighted — free, in your browser.
📄 Original Text
📝 Modified Text
📊 Differences
Text Diff: Compare two text blocks and show differences
Text Diff lets you compare two text blocks and show differences. Upload two text blocks and get a diff view — all processed locally in your browser, with no uploads and no sign-up.
Compare two document versions
Compare two document versions. This is one of the most common reasons people reach for Text Diff — and it handles the job in seconds, entirely in your browser.
Find changes between text drafts
Find changes between text drafts. This is one of the most common reasons people reach for Text Diff — and it handles the job in seconds, entirely in your browser.
Review code or text edits
Review code or text edits. This is one of the most common reasons people reach for Text Diff — and it handles the job in seconds, entirely in your browser.
Everything You Need in a Text Diff
Powerful features that make Text Diff fast, private, and free.
Instant Processing
Conversion and validation happen as you type.
Developer-Grade
Built for accurate, standards-compliant results.
100% Private
All processing is local — no data is sent anywhere.
Copy & Export
One-click copy to clipboard for quick use.
Free Forever
No sign-up, no API keys, no limits.
Regex & JSON Support
Full regular expression and JSON validation built in.
How to Use
Paste Original
Put the original text in the left box.
Paste Modified
Put the modified text in the right box.
Compare
Click Compare Texts.
View Diff
Green = added, Red = deleted, Gray = unchanged.
Detailed User Guide
Paste Original
Put the original text in the left box.
Paste Modified
Put the modified text in the right box.
Compare
Click Compare Texts.
View Diff
Green = added, Red = deleted, Gray = unchanged.